Airworthiness Directive · Amendment 39-17307 · Thielert Aircraft Engines GmbH Reciprocating Engines
Thielert Aircraft Engines GmbH Reciprocating Engines
This AD applies to all Thielert Aircraft Engines (TAE) TAE 125-02-99 and TAE 125-02-114 reciprocating engines.
We are adopting a new airworthiness directive (AD) for all Thielert Aircraft Engines GmbH (TAE) TAE 125-02-99 and TAE 125-02-114 reciprocating engines. This AD requires inspection of the oil filler plug vent hole at the next scheduled maintenance or within 110 flight hours after the effective date of this AD. If chips are found to be blocking the vent hole, additional corrective action is required before next flight. This AD was prompted by an in-flight shutdown of an airplane equipped with a TAE 125-02-99 engine. We are issuing this AD to prevent engine in-flight shutdown or power loss, possibly resulting in reduced control of the airplane.
Unless already done, within 110 flight hours after the effective date of this AD, or at the next scheduled maintenance, whichever occurs first, do the following.
(1) Remove the oil filler plug and check for chips blocking the vent hole in accordance with TAE Service Bulletin (SB) TM TAE 125-1015 P1, Initial Issue, dated April 27, 2012.
(2) If chips are found during the inspection in paragraph (e)(1) of this AD, disassemble the gearbox and check the radial shaft sealing rings (at the clutch and the propeller shaft) for leakage. If leakage is noted, replace the gearbox before the next flight.
After the effective date of this AD, do not install a gearbox with a S/N listed in TAE SB TM TAE 125-1015 P1, Initial Issue, dated April 27, 2012, into any engine unless the oil filler plug has passed the inspection required by paragraph (e)(1) of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
